[Xen-devel] domU reading its own xenstore home directory from userspace

["Andrew D. Ball" <aball@xxxxxxxxxx>]

What does this statement in the xenbus documentation on the xen wiki
mean: "The DomU kernel interface is structured in such a way that nodes
in the "home directory" of the domain cannot be addressed, and therefore
cannot be read from or written to. Tools may use this space to store
data that should not be accessed by the domain itself." ?
[ from http://wiki.xensource.com/xenwiki/XenBus , toward the bottom ]

I thought domU kernels must read data in the domU's home directory or is
the data that drivers watch somewhere else?

I want to read this data from domU userspace that that a domU can find
out what it's UUID is.  This is important for correlating domU's with
the dom0's they run on for management tools.  Reading a UUID from a
domU's xenstore home directory from domU userspace is the cleanest way
to do this that I can think of at the moment.

Thanks for your help.

Andrew


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